Make it possible to fully disable DOCS by considering
everything in DOCSDIR to be part of PORTDOCS. Really,
the "contrib" stuff belong in EXAMPLESDIR.
While here, use OPTIONS helpers, add DOCS to the
OPTIONS_DEFINE list, and bump PORTREVISION.
Maintainer should consider moving the contrib pieces
to EXAMPLESDIR, and moving the pkg-install to a
pkg-message so that it can be viewed later.

* TDB is now supported (will be filed as a separate
bogofilter-tdb port)
* bogofilter now supports a (faster) "combined data base"
* (single file) for
fresh installs, but continues to support the former "separate
data base" (two files) format.
* WARNING: the exit code for "error" has changed from 2 to 3
Update your scripts to use -T or to use the new exit codes.
* bugfixes
* new -T fixed-formatting terse mode for scripts
* documentation updates (FAQ)
* bogofilter can now degenerate tokens before looking them up
* support for encoded tokens was enhanced
* bogoutil error reporting improved
* new bogominitrain.pl script
PR: 55660
Submitted by: maintainer